问题 单项选择题 B型题

盐酸麻黄碱化学名()

A.(1R,2S)-2-甲氨基,苯丙烷-1-醇盐酸盐

B.4-[(2-异丙氨基-1-羟基)乙基]-1,2-苯二酚盐酸盐

C.(R)-4-(2-(甲氨基)-1-羟基乙基-1,2-苯二酚

D.1-异丙氨基-3-(1-萘氧基)-2-丙醇盐酸盐

E.4-[2-((1-甲基-3-(4-羟苯基)丙基)氨基)乙基]-1,2-苯二酚盐酸盐

答案

参考答案:A

解析:盐酸麻黄碱的化学名为(1R,2S)-2-甲氨基-苯丙烷-1-醇盐酸盐;盐酸普萘洛尔的化学名为1-异丙氨基-3-(1-萘氧基)-2-丙醇盐酸盐;盐酸异丙肾上腺素的化学名为4-[(2-异丙氨基-1-羟基)乙基]-1,2-苯二酚盐酸盐;盐酸多巴酚丁胺的化学名为4-[2-((1-甲基-3-(4-羟苯基)丙基)氨基)乙基]-1,2-苯二酚盐酸盐。

阅读理解
阅读理解。
Popular Books for Sale
                                               Learning How to Learn $24.99
Children who read this book show great interest in study. Many pictures will help understand it
easily and quickly.

                                     How to Use a Dictionary for Children $35.00
Read this book and learn:
How to find words in a dictionary; what the different marks in a dictionary mean; how to use a
dictionary to pronounce words correctly; but this book and help children unlock their
education. What's more, you will just pay 50% off for it before July 1st, 2009.

                                               Basic Study Manual $38.50
Read this book and learn:
What are the three difficulties to study and what to do about them; what to do if you are fed
up with
(对……厌烦) a subject; children read it to improve their ability of study.
1. According to the ads, these three books are for _____.
[ ]
A.men
B.parents
C.children
D.women
2. Many pictures in the book Learning How to Learn can _____.
[ ]
A.make the book beautiful
B.make the children draw beautiful
C.make the book sell well
D.make the children understand easily
3. _____ can tell you the meanings of the different marks in a dictionary.
[ ]
A.Learning How to Learn
B.Study Skills for Children
C.Basic Study Manual
D.How to Use a Dictionary for Children
4. If you buy all the three books in the ads on June 18,2009,you will have to pay _____ for them.
[ ]
A.$98.49
B.$49.26
C.$80.99
D.$79.24
5. The purpose (目的) of this passage is to _____.
[ ]
A.sell the three books to children
B.help children learn English
C.help children learn about nature
D.tell people how to use dictionary
问答题